Reinforced-concrete slab.



' mmm! Aaanfr 0 MATTI BBINFORCED CONCRETE SLAB P'P`I0ATI0H FILED DBO 2B1909 Patented Aug 30,1910

I l! l l I l I I I y v #l5 n I v l l i Il' l g l i I l l l l I I I I 5To all whom. it may concern: n

` Be it known that 1,0s\.v.\.Ln MATH, a citizen, of Switzerland,residing at Renens, Switzerland, have invented new and use- 5 fulImprovements in Reinforced-Concrete Slabs, of which the following islaspecification. This invention 'relates to a reinforced concrete slabadapted for the construction of buildings, vessels, fences and other objects. n

ln the accompanying drawing: Figure 1 is a longitudinal section of myimproved slab; Fie'. 2 a side view, and Fig. 3 an end view thereof. flatconci 'te slab 10 is reinforced 'nya skeleton of embedded cores .shownto consist of a number of wires connected to forni a united structure.

joined to a number of longitudinal wires 12, which are,k1n turn,connected by dlagoual wires 13. VThese diagonal wires. are arrangedin'pairs, and extend at like angles' from the central longitudinal wireto the flanking longitudinal wires.

Two of the diagonal wires extend from the junction of the centrallongitudinal wire with one of the end wires l1, toward the bodies of theflanking longitudinal wires.

As shown, n pair of end wiresill are' g Specification of Letters Patent.

Application led December 28, 1909. Serial No. 535.345.

- UNITED STATES PATENT ormoni i REINFORCED-CONCRETE SLAB.

Patented Ang. 30, 1910.

Two additional diagonal wires. extend from thc'body of the centrallongitudinal wire to the junctions of the flanking" longitudinal wireswith the second end wire. f

The .slab is provided at one edge wl; a 35 tongue l-l, and at the otheiedge witn a groove l5,`said tongue and groove haar a semi-circular crosssection. The slab n1 1 5.' be made of great length, 1S very strong, and

possesses considerable resiliency. .3.o I

1 claim: A concrete slab containing a core which .consists of n pair ofVend wires, a central

